The invention discloses an electrical control variable plunger pump which is composed of a driver (102), electric actuators (101,81), mechanical connecting devices (100, 82), n groups of plunger groups, a cylinder body (87), oil inlet channels (97, 88), oil outlet channels (96, 85); oil inlet valves (88, 90, 95) and oil outlet valves (89, 93, 94), and a pump control system can be formed by matching a controller, an executing mechanism, a feedback system and a loading object; the controller generates control amount according to received external instructions, feedback information and built-in control algorithm; the driver changes the driving current and voltage of the electric actuators according to the control amount; the electric actuators drive the plunger groups to perform the corresponding linear movement to finish the oil intake and oil exhaust through the mechanical connecting devices, the instant displacement of the pump follows the changes of the external instructions, and the control of motion parameters and process changes of the loading object is realized; and the whole pump control system has the advantages of simple structure, rapid response and flexible control strategy.